Dominance

Adjacency is the relation between two branches in a tree structure. In the UNL^arium framework, adjacency is used to represent the structure of maximal projections and, therefore, to state the distance of constituents in relation to the head.

Dominance

In the UNL^arium framework, syntactic relations are described in terms of a general tree structure: the X-bar, depicted below.

    XP
   / \
spec  XB
     / \
    XB  adjt
   / \
  X   comp

In structure above, the distance between the nodes X and comp is said to be lower than the distance between X and adjt, which is said to be lower than the distance between spec and X. This distance can be easily measured in terms of projections between the nodes: there's only one projection (lower XB) between X and comp; there are two projections (lower XB and higher XB) between X and adjt; and there are three projections between X and spec.

The number of intermediate projections define the values of the adjacency in the UNL^arium framework, which are the following: